Hi Diana Gordon,
Since you’ve already tested three headsets and the recordings usually sound clear on your side, this may be happening only when your voice is transmitted during a call.
Does it happen in every calling app or only one? Are you using the installed app or joining through a browser? If possible, please try a call in a different app and then another call using a mobile hotspot. This should help confirm whether the issue is tied to a particular app or your usual network connection.
You can also press Windows + R, enter mmsys.cpl and press Enter. Open the Communications tab, select Do nothing and apply the change. Then, under Recording, open your microphone’s Properties > Advanced and clear "Allow applications to take exclusive control of this device", if that option is available.
Please also share your PC make and model, the affected calling apps and the Windows version and OS build shown by winver. Let me know whether this started after a Windows update or another change. That information will help determine whether an app setting, connection issue or a manufacturer chipset, USB or firmware update needs to be checked next.